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Temperature changes in the root ecosystem affect plant functionality

Plant Communications 2023年第3期4卷 197-214页

作者： Mary Paz González-García Carlos M.Conesa Alberto Lozano-Enguita Victoria Baca-González Bárbara Simancas Sara Navarro-Neila María Sánchez-Bermúdez Isai Salas-González elena caro Gabriel Castrillo Juan C.del Pozo Centro de Biotecnología y Genómica de Plantas(UPM-INIA/CSIC) Universidad Politécnica de Madrid(UPM)-Instituto Nacional de Investigación y Tecnología Agrariay Alimentaria-CSIC(INIA/CSIC)Campus Montegancedo28223 Pozuelo de Alarcón(Madrid)Spain Departamento de Biotecnología-Biología Vegetal Escuela Técnica Superior de Ingeniería AgronómicaAlimentaria y de BiosistemasUniversidad Politécnica de Madrid(UPM)28040 MadridSpain Undergraduate Program in Genomic Sciences Center for Genomics SciencesUniversidad Nacional Autonóma de MéxicoAv.Universidad s/n.Col.ChamilpaCuernavaca 62210MorelosMéxico Future Food Beacon of Excellence&School of Biosciences University of NottinghamSutton BoningtonUK

Climate change is increasing the frequency of extreme heat events that aggravate its negative impact on plant development and agricultural *** experiments designed to study plant adaption to heat stress apply homogeneous high temperatures to both shoot and ***,this treatment does not mimic the conditions in natural fields,where roots grow in a dark environment with a descending temperature *** high temperatures severely decrease cell division in the root meristem,compromising root growth,while increasing the division of quiescent center cells,likely in an attempt to maintain the stem cell niche under such harsh ***,we engineered the TGRooZ,a device that generates a temperature gradient for in vitro or greenhouse growth *** root systems of plants exposed to high shoot temperatures but cultivated in theTGRooZ grow efficiently and maintain their functionality to sustain proper shoot growth and ***,gene expression and rhizosphere or root microbiomecomposition are significantly less affected in TGRooZ-grown roots than in high-temperature-grown roots,correlating with higher root *** data indicate that use of the TGRooZ in heat-stress studies can improve our knowledge of plant response to high temperatures,demonstrating its applicability from laboratory studies to the field.

关键词： heat stress root temperature gradient nutrition gene expression microbiome

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First Characterization of <i>Escherichia coli</i>Strains Isolated from Wildlife Griffon Vulture (<i>Gyps fulvus</i>) in the Southeast of Spain

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Open Journal of Veterinary Medicine 2014年第12期4卷 329-333页

作者： Azucena Mora Nieves Ortega elena Garcia Susana Viso Mónica G. Candela Ghizlane Dahbi Francisco Cuello María Rosa caro Laboratorio de Referencia de E. coli (LREC) Departamento de Microbiología y Parasitología Facultad de Veterinaria Universidad de Santiago de Compostela Lugo Spain Departamento de Sanidad Animal Facultad de Veterinaria Campus de Espinardo Universidad de Murcia Murcia Spain

The aim of the present study was to characterize a collection of Escherichia coli strains isolated from asymptomatic griffon vulture (Gyps fulvus) during a reintroduction program in the southeast of Spain, in order to establish if griffon vulture could play a role in the spread of resistant or potentially pathogenic E. coli strains. For this purpose, 14 E. coli strains obtained from 10 griffon vulture were studied to establish their serotypes, phylogroups, virulencegene profiles and antimicrobial resistances. High heterogeneity was observed within the 14 strains isolated which belonged to three phylogroups (A, B1 and D), 8 serogroups (O2, O21, O29, O60, 073, O78, O103 and O141) and 13 different serotypes. Out of 34 genes screened, we have detected eight virulence genes that are typical of extraintestinal pathogenic E. coli (ExPEC) (fimH, fimAvMT78, iroN, iucD, cvaC, iss, traT and tsh);however, none of the studied strains showed the ExPEC status. The 14 strains were also analyzed for the production of extended-spectrum beta-lactamases (ESBLs) and for antimicrobial resistances. None of the 14 strains were ESBL-producing E. coli, but high resistance-prevalences to ampicillin and cotrimoxazole were detected. To our knowledge, this is the first characterization of E. coli strains isolated from griffon vulture and although they did not show high virulencegene scores, they showed cotrimoxazole resistance.

关键词： Antibiotic Resistance APEC Escherichia coli ExPEC Griffon Vulture

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